turnbull



' No. 6l7,065. Patented Jan. 3, I899.

F. TURNBULL.

ROTARY TIPPLER.

(Application filed Dec. 28, 1897,)

(No Model.) 2 Sheets-Sheet No. 6l7,065. Patented Jan. 3, I899. F. TURNBULL.

ROTARY TIPPLER.

(Applicatioh filed Dec. 28, 1897.) (No Model.) 2 Sheets-Sheet 2.

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PATENT FRED TURNBULL, OF SPENNYMOOR, ENGLAND.

ROTARY TIPPLER.

SPECIFICATION forming part of Letters Patent No. 617,065, dated January 3, 1899.

Application filed December 28,1897. Serial No. 664,1 l7. (N0 model.)

To all whom, it may concern.-

Be it known that I, FRED TU RNBULL, a sub ject of the Queen of Great Britain, residing at Spennymoor, in the county of Durham,England, have invented certain new and useful Improvements in Rotary Tipplers, (patented in Great Britain January 17, 1896, No. 1,180,) of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to a machine for tipping or teeming tubs, corves, wagons, or the like containing coal, stone, or other materials, with particular reference to coal.

The object of my invention is to provide a simple and improved machine of this character which will embody mechanism for securing fast and slow speeds.

A further object is to provide simple means by which the tippler may be set in motion and on the completion of one rotation be brought to rest automatically at such a point as will admit of the empty tub being pushed out of the tippler at the opposite end to that atwhich it entered by the incoming full tub.

It is desirable that tipplers, such as are used for tipping or teeming coals or other materials requiring to be distributed more or less evenly over a screen or other surface, should be provided with an arrangement for automatically changing the speed during each rotation. If a relatively slow speed be given to the tippler during the fraction of a rotation that the coals are leaving the tub and afterward accelerated until the rotation be completed, much time is saved and a better distribution of the coals on the screen is secured than is the case with tipplers as heretofore employed.

The construction and arrangement of my invention are fully shown in the accompanying drawings, which illustrate a tippler adapted to an ordinary tub or corve as is used in coalmines, as hereinafter fully described.

Referring to the drawings, Figure 1 is an end elevation, Fig. 2 a side elevation, and Fig. 8 a plan view, of the tippler. Figs. 4 and 6 show the circular end rings of the tippler in relation to the supporting-rollers, and Figs. 5, 7, and 8 are sections of the rings and rollers together.

In the drawings forming part of this specification the separate parts of my improvement are designated by the same letters of reference in each of the views, and in said drawings A B and A and B designate two metal rings, each having two peripheries of different diameters. The peripheries may be of any suitable shape corresponding to the rollers with which they engage; but I prefer to make them fiat, as shown in the drawings. The rings are provided with internal projections, to which may be secured the framing for holding the tub and maintainin g the said rings parallel with each other and sufficient distance apart to allow of convenient standing room for the tub in which to tip its load.

The framing is preferably constructed of angles and plates 0 O D and secured to the rings by rivets or bolts. WVhen one-half of a complete rotation has been performed and the tippler-rings, with the tub, have become inverted, the tub is suspended from the angleirons G C, thus preventing it from falling from the framing. In cases where the coals are not loaded above the top of the tub any suitable means may be provided in a similar manner for catching the top of the tub or in some cases it may be found preferable to suspend the tub when inverted by the axles in any adapted manner.

The rings and framing thus constructed may be termed the cage, which cage rests on two pairs of rollers E E and F G F G, of which E E are anti friction-rollers for the purpose of supporting the tippler-cage on that side at which the coals, or other materials are teemed, the fixed spindles on which they revolve being quite short, so as not to obstruct the fall of the coals. G, however, are keyed to the through driving-shaft S at the requisite distance apart and are for the double purpose of supporting the cage and imparting motion to the same by frictional contact with the rings, The driving-rollers each have two peripheries I and G, corresponding with the peripheries of the cage-rings, the smaller periphery of each roller being adapted to engage simultaneously with the larger periphery of the ring (with which it is in contact) during the period of slow speed and the larger periphery of each roller with the smaller periphery of the ring The rollers F G and G during the period of fast speed. The manner in which these operations are to be performed will be best understood by reference to Figs. 4. to 8, the direction of rotation of the rings and the rollers being shown by the arrows in Figs. 4 and 6. Figs. 4 and 5 show the arrangement of the rings and rollers during the period of relatively fast speed and Figs. 6 and 7 of the slow speed.

Referring to Figs. 4 and 5, it will be seen that the larger periphery G of the roller F G is in frictional contact with the smaller periphery A of the ring, while the smaller periphery F is free from contact with any part of the ring. In the course of the rings rotation, however, as the part B approaches the periphery F the cage is slightly,but gradually, raised, and 13 comes in frictional contact with F, While the periphery A is being relieved of contact with the roller G. The relation of the rings and rollers is then as seen in Figs. 6 and 7, when the slow speed is in progress, the proportionate diameters of the rings and the rollers in contact having been changed. As the rotation proceeds the point B passes the roller-periphery F, and as the ring periphery A again falls gradually onto G the latter imparts a fast speed to the cage, as before.

The periphery B forms the arc of a circle the length of which is decided by the proportion of the rotation it is required that B shall be in contact with its corresponding roller G, B and B being the points where the periphery B commences and terminates, respectively. By fixing the points at the desired position the periods for relatively fast and slow speeds may be duly apportioned. By preference I place these points so that the ring peripheries B are in contact with roller peripheries F while the coals are being teemed and the ring peripheries Awith the roller peripheries G during the remainder of the rot-ation.

Contact is constantly maintained between the periphery A and the antifriction-roller E, as shown in Fig. 8, which is a section through the roller E and ring A B.

The whole machine is mounted on a suitable foundation or framework, such as the girders Z Z.

Any suitable mechanism may be employed for the purpose of setting the tippler in motion; but I prefer to make use of the improved mechanism comprised in my invention, which I will now proceed to describe.

To one end of the spindle L is keyed the lever M and to the other the arm N. A pivot K is formed on the lever, so that'the handle M of the lever is capable of motion radially in two directions at right angles to each other. Byimparting to the handle M, as seen in Fig. 1, a slight movement to the left the snug M is brought clear of the catch P. The lever M is then made to move toward the tippler, owing to the weight Q acting through the arms U and N and the link R. The same movement of the weight also presses the parts of the friction-clutch V together in the ordinary manner, and as the belt-pulley V or the like and that half of the friction-clutch to which it is secured are constantly revolving motion is conveyed to the driving-shaft S as long as the friction-clutch is in action. This motion is in its turn communicated to the tippler rings through the rollers on the driving-shaft, it being understood that the clutch V is fast on the shaft S. A rotation is then performed consisting of fast and slow speeds, as hereinbefore described. When one rotation of the tippler is almost completed, the catch P, secured to one end of the tippler, strikes the lever M at any desired point of the inclined part M of the lever M, and as the small re maining portion of the rotation is being completed the catch P forces the lever away from the tippler, thus raising the weight Q and releasing the friction-clutch V. Further rotation of the tippler is then prevented by the catch P coming in contact with the snug M The tub T may then be pushed out of the tippler and another one pushed in its place. The same series of operations may be repeated by the attendant again giving the lever-handle a slight pull toward the left (see Fig. 1) and then releasing his hold. The re mainin g operationsnamely, the upsetting of the tub, the changing of the speed, and the stopping of the tippler--are all performed automatically by the mechanism shown and described.

The spring M secured to the lever M, is for the purpose of bringing back the leverhandle to its original position after the catch P has passed the snug M The point along the inclined part M of the lever M, at which the catch P strikes the same, may be regulated by means of the link R, which is provided with a right and left hand screw and nut for this purpose.

It will be understood that the periphery of the rollers will correspond to the adopted shape of the periphery of the rings.

Having fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a tippler of the class described, the combination of frictional driving-rollers having two peripheries, with frictional tipplerrings having corresponding peripheries, said rollers and rings being relatively arranged so that they operate to produce varying speeds, substantially as and for the purpose set forth.

2. In a tippler of the class described, the combination, with tippler-rings having peripheries of varying diameters,of driving-rollers arranged to engage said respective peripheries at different points in the revolution, whereby a relatively fast and slow speed is produced, substantially as and for the purpose set forth.

3. In a tippler of the class described, the combination,with tippler-rin gs having two peripheries of difierent diameters, the outer periphery having a variable diameter, of driving-rollers having two peripheries adapted to respectively engage the inner and variable diameter outer peripheries of the tippler-rings at different points during the revolution, whereby a relatively fast and slow speed is produced, substantially as and for the purpose set forth.

4. An improved tippler of the class described, comprising a cage embodyinga framing carrying rings having peripheries of varying diameters, and driving-rollers supporting said cage and having peripheries respectively engaging the varying peripheries of the rings at different points in the revolution, substantially as and for the purpose set forth.

5. An improved tippler of the class described, comprising a cage formed of a fram ing carrying rings having two peripheries, the outer periphery being of variable diameter, and driving-rollers arranged in a pair beneath said rings and supporting the cage, said driving-rollers having peripheries adapted to respectively engage the different peripheries of the rings, substantially as and for the purpose set forth.

6. A ti ppler of the class described, comprising a rotary cage, and a main shaft having mechanism for rotating said cage, in combination With the spindle carrying the jointed lever mechanism, catch devices between said lever mechanism and the rotary cage, governin g Weight mechanism connected with the spindle, and friction-clutch mechanism carried by the main shaft and connected with the lever mechanism, substantially as and for the purpose set forth.

7. A tippler of the class described, comprising a cage provided with rings having two peripheries of different diameters, the outer periphery being of variable diameter, the supporting-rollers having a peripheral engagement with the inner peripheries of the tipplerrings, and the driving-rollers having two peripheries adapted to respectively engage the inner and outer peripheries of the tipplerrings at different points during the revolution of the latter, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 14th day of December, 1897.

FRED TURNBULL.

Witnesses:

HETHERINGTON NIXON, WILLIAM HUDSON Nixon. 

